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Plant Breeding and Genetics

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Articles 571 - 600 of 622

Full-Text Articles in Agronomy and Crop Sciences

Barley Variety Trials, 1962 And 1963, J L. Mcmullan Jan 1965

Barley Variety Trials, 1962 And 1963, J L. Mcmullan

Journal of the Department of Agriculture, Western Australia, Series 4

TO ASSESS their yielding ability and grain quality, varieties of barley are grown each year by the Department of Agriculture.

The trials are located on Research Stations in the cereal-growing areas.


Recommended Wheat Varieties, 1966, Department Of Agriculture, Western Australia Jan 1965

Recommended Wheat Varieties, 1966, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

THE State Wheat Advisory Committee has prepared recommendations for wheat varieties for 1966 sowings.


The Naturalised And Cultivated Annual Medics Of Western Australia, B J. Quinlivan Jan 1965

The Naturalised And Cultivated Annual Medics Of Western Australia, B J. Quinlivan

Journal of the Department of Agriculture, Western Australia, Series 4

IT is not many years since the term pasture improvement in Western Australia was synonymous with one species only, subterranean clover.

The amazing adaptability of this species to the environment enabled it to be grown in a wide range of rainfall conditions and in many different districts.


Premium Wheat In Western Australia, J A. Parish, R. F. Stone Jan 1965

Premium Wheat In Western Australia, J A. Parish, R. F. Stone

Journal of the Department of Agriculture, Western Australia, Series 4

This article describes the requirements for premium wheat and suggests a simple way for farmers to predict if their wheat will be suitable.

Correct initial sampling is vital.


Recommended Oat Varieties, 1966, J L. Mcmullan Jan 1965

Recommended Oat Varieties, 1966, J L. Mcmullan

Journal of the Department of Agriculture, Western Australia, Series 4

THE varieties Avon, Fulmark, Irwin, Kent and Ballidu are recommended for sowing in 1966 by the Department of Agriculture and the Coarse Grains Advisory Committee.

The areas suitable for these varieties, when planted for various purposes, are given in the map and tables.


Linseed Variety Trials, 1963-64 Season, J T. Reeves Jan 1964

Linseed Variety Trials, 1963-64 Season, J T. Reeves

Journal of the Department of Agriculture, Western Australia, Series 4

RESULTS of 1963-64 linseed variety trials are available for four trials on research stations and for four trials on farmers' properties.

These are shown in the table below. Excellent yields were obtained at some sites, while disappointing results were obtained at Chapman and Esperance.

Poor results at Esperance were due to the poor finish to the season.


Recommended Barley Varieties : 1964, J L. Mcmullan Jan 1964

Recommended Barley Varieties : 1964, J L. Mcmullan

Journal of the Department of Agriculture, Western Australia, Series 4

THE varieties Prior and Beecher are recommended for 1964 by the Coarse Grains Advisory Committee and the Department of Agriculture.


Recommended Oat Varieties, 1964, J L. Mcmullan Jan 1964

Recommended Oat Varieties, 1964, J L. Mcmullan

Journal of the Department of Agriculture, Western Australia, Series 4

THE varieties Kent, Ballidu, Avon, Dale and Fulmark are recommended for sowing in 1964 by the Department of Agriculture and the Coarse Grains Advisory Committee.


Dry Season Rice Varieties For The Ord River Valley, A L. Chapman, P. J. Van Rijn Jan 1964

Dry Season Rice Varieties For The Ord River Valley, A L. Chapman, P. J. Van Rijn

Journal of the Department of Agriculture, Western Australia, Series 4

PREVIOUS experimental work at the Kimberley Research Station (Langfield 1961) showed that, in general, indica varieties of rice are best adapted for wet-season sowing and japonica varieties for dry-season sowing.

This article gives the results of three rice variety and time of planting experiments carried out at Kimberley Research Station in the I960, 1961, and 1962 dry seasons. The recommendation is to sow the variety Caloro during May.


Stem Rust Of Wheat, H L. Harvey Jan 1964

Stem Rust Of Wheat, H L. Harvey

Journal of the Department of Agriculture, Western Australia, Series 4

STEM RUST is one of the most serious diseases of wheat and is of world-wide importance.

Fortunately, widespread epidemics are rare in Western Australia because the general climatic conditions are usually unfavourable to the disease.

Nevertheless, localised outbreaks of stem rust are quite common on the Esperance Plains and around Geraldton where seasonal conditions are frequently mild and humid.


The 1963-64 Wheat Stem Rust Epidemic, J T. Reeves Jan 1964

The 1963-64 Wheat Stem Rust Epidemic, J T. Reeves

Journal of the Department of Agriculture, Western Australia, Series 4

Comments on the 1963 epidemic and the current situation regarding rust races and resistant varieties in Western Australia.

THE 1963-64 harvest included 12 million bushels of undergrade wheat, representing 25 per cent, of the total harvest.

The average yield was reduced to only 11.3 bushels per acre. Although these adverse effects were due to a number of causes, the principal one was stem rust.

The economic loss due to this disease in the 1963-64 harvest probably exceeded £10 million.


Recommended Wheat Varieties, 1965 : State Wheat Advisory Committee Recommendations For Wheat Varieties For 1965 Plantings, Department Of Agriculture, Western Australia Jan 1964

Recommended Wheat Varieties, 1965 : State Wheat Advisory Committee Recommendations For Wheat Varieties For 1965 Plantings, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

State Wheat Advisory Committee recommendations for wheat varieties for 1965 plantings.

THE wheat rust epidemic of 1963 has directed attention to resistance of varieties to this disease, new races of which have recently appeared in Western Australia.

However, last year was one of abnormal seasonal conditions, with late summer rains followed by a mild winter, and spring conditions which favoured rust.


Oat Variety Trials, 1962 And 1963, J L. Mcmullan Jan 1964

Oat Variety Trials, 1962 And 1963, J L. Mcmullan

Journal of the Department of Agriculture, Western Australia, Series 4

OAT variety trials were located on a number of Research Stations and, in 1963, on three other properties in the higher rainfall areas.

These three trials contained only varieties of midseason maturity.

The location of the test centres is given in the tables, while brief details of the varieties and crossbreds under test in the period 1962-64, inclusive, are given in Table 1.


Wheat Breeding And Variety Trials, 1963-64, J T. Reeves Jan 1964

Wheat Breeding And Variety Trials, 1963-64, J T. Reeves

Journal of the Department of Agriculture, Western Australia, Series 4

A review of the wheat breeding and pedigree seed production by the Department of Agriculture.

Yields from the wheat variety trials at agricultural research stations during the 1963-64 season are presented and discussed.


Studies Of The Mechanisms And Sources Of Spotted Alfalfa Aphid Resistance In Ranger Alfalfa, W. L. Howe, W. R. Kehr, M. E. Mcknight, G. R. Manglitz Mar 1963

Studies Of The Mechanisms And Sources Of Spotted Alfalfa Aphid Resistance In Ranger Alfalfa, W. L. Howe, W. R. Kehr, M. E. Mcknight, G. R. Manglitz

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Mechanisms and sources of spotted alfalfa aphid resistance in Ranger alfalfa and its five parental strains were investigated during 1957-1960.


Relationship Of Self-Fertility, Pollen Abortion, And Micronuclei Number To Agronomic Performance In Alfalfa, P. P. Rotar, W. R. Kehr Feb 1963

Relationship Of Self-Fertility, Pollen Abortion, And Micronuclei Number To Agronomic Performance In Alfalfa, P. P. Rotar, W. R. Kehr

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The purpose of this investigation was to study self-fertility, pollen abortion, and meiosis in a randomly selected population of Ranger alfalfa clones and their polycross progenies, and to relate such information to agronomic data obtained on the same materials.


Wagin : A New Wheat Variety, Department Of Agriculture, Western Australia Jan 1963

Wagin : A New Wheat Variety, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

THE name "Wagin" had been given to the wheat crossbred M.121, which was being released by the Department of Agriculture for sowing in 1964.


Cereal Variety Trials, 1961-62, J T. Reeves Jan 1963

Cereal Variety Trials, 1961-62, J T. Reeves

Journal of the Department of Agriculture, Western Australia, Series 4

DURING the 1961-62 season cereal variety trials were sown at eight research stations in the medium and low rainfall areas of Western Australia.


Recommended Wheat Varieties : 1963, Department Of Agriculture, Western Australia Jan 1963

Recommended Wheat Varieties : 1963, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

THE State Wheat Advisory Committee has issued its official list of recommended wheat varieties for 1963.

The list includes the new rust resistant variety Gamenya. Two other new varieties—Mengavi and Claymore—are provisionally recommended for trial sowings on farmers' properties.

Only Gamenya and Mengavi are resistant to the races of stem rust now present in this State.


Recommended Wheat Varieties : 1964, Department Of Agriculture, Western Australia Jan 1963

Recommended Wheat Varieties : 1964, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

THE State Wheat Advisory Committee has issued its official list of recommended wheat varieties for 1964.


Oat Variety Trials On Research Stations, J L. Mcmullan, J. T. Reeves Jan 1962

Oat Variety Trials On Research Stations, J L. Mcmullan, J. T. Reeves

Journal of the Department of Agriculture, Western Australia, Series 4

THE oat variety trials on whose results the Department of Agriculture's recommendations are based are carried out each year on research stations in the medium and low rainfall areas.

Results of oat variety trials on Department of Agriculture Research Stations in the medium and low rainfall areas for the years 1957,1958,1959 and 1960


Barley : Variety Trials 1954-1960 And Recommendations For 1962, J T. Reeves, J. L. Mcmullan Jan 1962

Barley : Variety Trials 1954-1960 And Recommendations For 1962, J T. Reeves, J. L. Mcmullan

Journal of the Department of Agriculture, Western Australia, Series 4

THE object of the barley variety trials carried out by the Department of Agriculture is to obtain yield and other information on new varieties or crossbreds produced in Australia or introduced from overseas.


Wimmera Rye Grass : Major Pasture Grass Of The Cereal And Sheep Areas, H G. Cariss Jan 1962

Wimmera Rye Grass : Major Pasture Grass Of The Cereal And Sheep Areas, H G. Cariss

Journal of the Department of Agriculture, Western Australia, Series 4

MANY of the volunteer pasture species of the cereal and sheep areas seed profusely, persist well and produce useful early green feed.

Mostly, however, they produce poor quality herbage of low forage value, particularly during the spring and summer months.

The seeds of many species cause problems in stock husbandry and lower the value of wool.


Yield And Flour Quality Of Early Maturing Wheat Varieties, J A. Parish, J. T. Reeves Jan 1962

Yield And Flour Quality Of Early Maturing Wheat Varieties, J A. Parish, J. T. Reeves

Journal of the Department of Agriculture, Western Australia, Series 4

DESIRABLE milling characteristics have for many years ensured a ready market for Australian wheat. Present demand for Australian wheat is strong and the sale of the 1961 harvest is assured.

Cereal Products Adviser J. A. Parish, B.Sc. (Agric.) and Plant Breeder J. T. Reeves, M.Sc. (Agric.) describe and explain the tests on the results of which wheat variety recommendations are based.

Detailed results of yield and quality tests from early maturing wheat variety trials are included.


Barrel Medics For Eastern Wheatbelt Pastures, D B. Argyle Jan 1962

Barrel Medics For Eastern Wheatbelt Pastures, D B. Argyle

Journal of the Department of Agriculture, Western Australia, Series 4

There is a big potential for the use of barrel medic in wheatbelt pastures, and prospects have been further improved by the advent of the early-maturing Cyprus strain.

In this article Merredin Agricultural Adviser D. B. Argyle gives some hints on establishment and management of barrel medic pastures in the eastern wheatbelt.

Much of what he says also applies to other areas; contact your local adviser for further information.


The Effects Of Irradiating Dormant Maize Seeds With Xrays And Thermal Neutrons, Rosalind Morris, E. F. Frolik Dec 1961

The Effects Of Irradiating Dormant Maize Seeds With Xrays And Thermal Neutrons, Rosalind Morris, E. F. Frolik

Nebraska Agricultural Experiment Station: Historical Research Bulletins

In 1951 a research program was started at the University of Nebraska to compare the developmental effects of thermal neutrons and X rays on different crop seeds. Three crops, barley, tomato and maize, were chosen for additional information involving induced chromosomal aberrations and seedling mutations. The maize investigations are presented in this bulletin, along with a comparison among the three crops with respect to irradiation effects.


The Performance Of Alfalfa Synthetics In The First And Advanced Generations, W. R. Kehr, H. O. Graumann, C. C. Lowe, C. O. Gardner Oct 1961

The Performance Of Alfalfa Synthetics In The First And Advanced Generations, W. R. Kehr, H. O. Graumann, C. C. Lowe, C. O. Gardner

Nebraska Agricultural Experiment Station: Historical Research Bulletins

During alfalfa breeding investigations conducted at the Nebraska Agricultural Experiment Station, numerous superior clones were selected and tested as clones, and in polycross progeny tests. Information was needed on the performance of synthetic varieties in the first and advanced generations, on the optimum number of clones to include in a synthetic variety, and on parent-progeny relationships. Clones with high general combining ability for forage yield as measured by polycross progeny tests, and in certain instances specific combining ability based on single-cross tests, were intercrossed in various ways to produce synthetic varieties. A group of synthetics varying in number of parents …


Progress From Recurrent Selection Procedures For The Improvement Of Corn Populations, John H. Lonnquist Jul 1961

Progress From Recurrent Selection Procedures For The Improvement Of Corn Populations, John H. Lonnquist

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The possibilities of developing synthetic varieties suitable for the fringe areas of the corn belt, where cost of hybrid seed is high relative to the value of the expected crop, and in areas where hybrid corn might not be a feasible approach for other reasons, made it seem a worthwhile objective for study. Effort has been made in recent years to increase the productivity of hybrid combinations through selection of new superior lines using standard breeding procedures. The limited progress realized has resulted in an increased interest in the possible use of alternate methods for the development of superior germplasm …


Rice Growing In The Ord River Valley, C B. Langfield Jan 1961

Rice Growing In The Ord River Valley, C B. Langfield

Journal of the Department of Agriculture, Western Australia, Series 4

THE first commercial rice crop in the Ord River Valley was planted late in I960 and plans are in hand for some 35,000 acres of land to be subdivided for irrigation settlement by 1964, with rice as a major crop.


Potato Variety Trial, James P. Fallon, G. C. De Haan Jan 1961

Potato Variety Trial, James P. Fallon, G. C. De Haan

Journal of the Department of Agriculture, Western Australia, Series 4

DELAWARE has been the only variety of Potato grown commercially in Western Australia. This is due to the fact that in the past an early maturing variety with a short dormancy period has been required to suit both hill plantings and swamp crops.

However, with the advent of sprinkler irrigation and hence better control of moisture and growing conditions, the need for early maturing varieties has ceased to exist in some districts.

There has been consequently an increasing interest in testing varieties which have proved high yielding and of good quality in other parts of the world.